I had my car wideband tuned with ubderdata for the loggest time. A few months ago I switched over to crome and filled in the parameters for my car and it generated a fuel map. I was amazed when i finally put it on the wideband to how good of a map it really is. I'm not going to change a single cell on the generated map. I'm just amazed at crome right now! My goal is 11:1 AFR since the louisiana summer heat will raise the AFR quite a bit from night to day. I used techedge 2 for logging and some software I wrote to read the csv logs.

Here are some pics




This shows you when i build boost vs rpm, the higher the number the more times data was enter in that cell




So this is a big thumbs up to crome!


Nick

 

your goal should be to properly use the intake air temp correction multipliers in crome

 

Your absolutely correct! I didnt think of that... but even if I did I wouldnt do it right now. Atleast I know my map is safe, but not optimal.

 

sweet little logger there. I like how it shows the sample count so you can see what is bogus.
Maybe apply color shading to the logged A/F's based on sample count?

I've also noticed that CROME basemaps are very driveable. Curious as to what you used for the boost fuel comp. %?
My CROME generated maps always seem to be on the high 12's/low 13's side in boost when using the default 120%, so I like to throw in a fatty 140 and it seems to ballpark better.
I also completely flatten the 2d curves afterwards and put in the appropriate TQ curve taper of the high cam from 5-6k and the TQ dump at around 8k. From there it usually will only require about 5-6 3rd gear rippers.

You wrote that logger?

 

I use the user defied TPS voltage reading to get rid of those that bogus data from when you let off the throttle and A/F sky rocket. The software is not a logging software, its a CSV matrix software so it just take logs and puts them in to a easy to understand format. I wrote this software 2 years ago because I didnt like review logs and I wanted a way to see what area of cells needed to be changed in uberdata. I actually tried to sell it then, but I didnt try to hard. Anyway it made back into the light when I wanted to view the logs from crome's tune yesterday. I've had a few PM's tonight about my base map. To be honest with everyone, I dont recall what I put in for any of the values besides fuel injector size,FTL,redline, and shift light. I just filled out the parameters and called it a day. Since I didnt spend any time working with the software I dont recall to much about it. I doubt I will add any more features until next time I needed it which could be years from now (I hope). I'll post my bin next time I pull my ecu out of the car.

Now some of the cool things you can do with the software is see where you boost builds most of the time. Such as I usually hit 9psi at 5000rpm. So you can see how you 'usually' build boost vs rpm easily. Also clicking on Max shows you the highest value in each cell and min shows you the lowest value.

Now the funny thing is, I'll spend a several hours programming software, BUT I only spend minimal amount of time tuning my car. I dont see myself making any changes to this map.

Nick

 

What injectors are you using?

 

old DSM 450 junkyard specials